Wrench



July 14, 1936.

A. COLOGNORI ET AL WRENCH Original Filed July 12, 1932 16 5 $3 f f 3 k 7X L 46 47 44 18 7o 71 '23 H 24 v 15 Q. Mtg-3 LI ||r Imam I I H I INVENTORS 4L4 TORNEY Patented July 14, 1936 UNITED STATES WRENCH Aldo Colognori, Guttenberg, N. J., and Louis Werkstcll, Brooklyn, N. Y.

Refiled for abandoned application Serial No. 622,024, July 12, 1932. This. application July- 18, 1935, Serial No. 31,976

4, Claims.

This invention relates to wrenches. An object of this invention is to provide a wrench provided with nut gripping means which may be readily locked and unlocked to prevent accidental .sli ping of the wrench from the nut, the construction being such that the locking and unlocking means is located so as to be readily operated while actuating the wrench.

A further object of this invention is to provide a wrench of the character described composed of laminations or superimposed sections to permit the wrench to be readily and economically assembled and the operative portions thereof suitably encased.

A further object of this invention is to provide a neat, compact and rugged wrench of the character described which shall comprise comparatively few and simple parts, which shall be relatively inexpensive to manufacture, easy to manipulate, and practical and efficient to a high degree in use.

Other objects of this invention will in part be obvious and in part hereinafter pointed out.

This application is a substitute application for applicants prior abandoned application, Serial No. 622,024, filed July 12th, 1932.

The invention accordingly consists in the features of construction, combinations of elements, and arrangement of parts which will be exemplified in the construction hereinafter described, and of which the scope of application will be indicated in the following claims.

In the accompanying drawing, in which is shown one of the various possible-illustrative embodiments of this invention,

Fig. 1 is a view of one face of a wrench embodying the invention;

Fig. 2 is a cross-sectional view taken on line 22 of Fig. 1;

Fig. 3 is a cross-sectional view taken on line 33 of Fig. 2;

Fig. 4 is a cross-sectional View taken on line 44 of Fig. 1; and- Fig. 5 is a view similar to Fig. 3 but showing the parts in another position.

Referring now in detail to the drawing, I0 designates a wrench embodying the invention, having a handle H and head D provided with jaws for gripping a nut. As here shown, the wrench comprises three superimposed sections or laminations. The bottom lamination or section I I and the top lamination or section I2 are identical in shape except that the bottom section is provided with a slot I3, for the purpose hereinafter described.

Interposed between the bottom and top sections is a middle section or lamination I4, described in greater detail hereinafter. The bottom lamination I I is provided with an elongated handle portion I5 and with a pair of spaced portions I6 and I1, forming part of the gripping jaws and havin Parallel inner edges I6a and IIa and edges I8 and I9, forming substantially a 60 angle to each other and tov said edges I6a and Ila, respectively, whereby a hexagonal nut may be received by the edges IBa and I'm and contacted by the edges I8 and I9. The top section I2 is likewise provided With portions I6 and I! forming part of the gripping jaws, and with edge portions I601. and Ho, I8 and I9.

The middle section I4 is likewise provided with a handle portion 22 shaped similarly to the handle portion I5 and attached thereto by means of spaced transverse rivets 23 and 24 extending through handle H. The member I4 is further provided with short fingers 26 and 21 having circular edges 28 and 29, respectively, disposed inwardly of edges I8 and I9, and terminating in end portions 30 and 3|, short of the ends of the jaw members. The head D and the jaw members thereof are thus slotted, as illustrated in the drawing. The superimposed sections I I, I2 and I4 may further be attached together by another pair of rivets 33 adjacent the fingers 26 and 21.

For the purpose hereinafter appearing, the middle section I4 is provided with an elongated longitudinal slot 60 and with an enlarged recess til at one end of the slot 60 and between the fingers 26 and 21.

Pivotally mounted in the slot formed between the. spaced portions I6 of the sections II and I2, is a member 40 having substantially the thickness of the inner section I4, and provided with a curved edge 4| adapted to contact, in one position of said member, the curved edge 28 of said finger 26. As shown in Fig. 3 of the drawing, said member 40 is further provided with an edge portion 43 aligned with the edges I 8 of the upper and lower sections I 2, and with an edge 44 aligned with the edges Ilia of said sections. The length of the edge 44 is substantially equal to one edge or side of the hexagonal nut received within the head of the wrench. The member 40 is further provided with a pointed portion 46 forming an edge .41 adapted to contact a third edge of the hexagonal nut. The pivotal mounting of said member 40 may be by a transverse pin 49 fixed to said pair of spaced, parallel portions I6.

It will be noted that said member 40 may be pivotally moved from the position shown in Fig. 3 to the position shown in Fig. 5. Said member is further provided with a shoulder portion 50 adapted to contact the end 30 of the finger 26 to limit pivotal movement of said member. Preferably the shoulder 50 contacts the edge 30 when the edge 43 of said jaw member is at right angles to theedges- I60. of said fingers I6, and point 46 is entirely within the slot between said fingers.

' There is further pivoted in the slot formed be- It will now be noted that the wrench Ill may be used for turning a nut. Beginning with members 40 and 40a. in the position shown in Fig. 5, the wrench is shoved on the hexagonal nut, the nut causing rotation of the jaws to the position shown in Figs. 1 and 3. In this position, the nut is gripped and may be rotated. It Will be noted that the slightest inward radial pressure toward the nut will cause the nut to engage the edge portions 43 of said pivoted members for retaining the same in gripping position.

For preventing accidental slipping of the wrench off the nut, however, the jaws 40 and 4011 are further provided with angle shaped cut out portions 62 and 62a forming in the position shown in Fig. 3, a pair of parallel edges aligned with the edges 64 and 65 of the enlarged slot portion 6|. Slidably mounted within the slot 60 is a T-shaped member 68 having a head 69 received in the position shown in Fig. 5, within the recess 6|. AS shown in Fig. 3 of the drawing, the head 69 of said member 68 may be moved in between the jaw members 40 and 40a, contacting the angle shaped cut out portions 62 and 62a. In this position pivotal movement of the members 40 and 46a to the position shown in Fig. 5 of the drawing, is not possible, said members being positively locked and retained in nut gripping position by said sliding member 68.

As stated above, the lower section II is provided with a relatively short slot l 3. Fixed to the rear end of the sliding member 68 is a pin 10 extending through said slot [3, and fixed to the outer end of said pin 10 is a thumb-grip piece ll slidably contacting the outer surface of said section I I It will now be noted that the member 68 may be slidably moved in opposite directions by merely engaging the thumb-piece H. The thumb-piece is preferably located close to the neck of the wrench so that when the wrench is held in the hand for manipulation, the thumbpiece will be located adjacent the thumb to permit ready manipulation of the member 68 to lock or unlock the pivoted members 40 and 40a. In use, the member 68 is first moved to unlocked position, as shown in Fig. 5 of the drawing. The wrench is then engaged with the nut, thus rotating the members 40 and 40a to the position shown in Fig. 3 of the drawing. The thumb-piece H may then be. moved by means of the thumb to the position shown in Fig. 2 for locking the jaws against opening movement. The wrench may then be turned to rotate the nut. During such operation, accidental slipping of the wrench ofi the nut is not possible. In fact, the wrench cannot be disengaged from the nut without moving the sliding member to released position. After turning the nut, the thumb piece 10 may then be moved rearwardly for releasing the members 40 and 40a to permit the wrench to be removed.

In some angular positions of the wrench, it may be diflicult to retain the wrench on the nut without slipping. In such cases, the locking means may be quickly and readily actuated to prevent such slipping. Of course, the locking means 68, 69 may be replaced by friction, spring or other suitable non-locking means for retaining the pivoted members 40 and 40a in nut gripping position, as shown in Figs. 1 and. 3 of the drawing.

It will thus be seen that there is provided a de-- vice in which the several objects of this inven-- tion are achieved, and which is well adapted to meet the conditions of practical use. 1 As various possible embodiments might be made of the above invention, and as various l changes might be made in the embodiment above set forth, it is to be understood that all matter herein set forth or shown in the accompanying drawing is to be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A wrench comprising a handle and a pair of integral jaws having parallel edges adapted to receive a hexagonal nut therebetween, a member pivoted to each of said jaws, each member having three edges for contacting three edges of said nut, said pivoted members being movable by said nut into engagement with the sides of said nut upon sliding the wrench radially onto said nut, and means for locking said members against pivotal movement in nut engaging position to prevent radial movement of the wrench off said nut.

2. A wrench comprising a handle and a pair of integral jaws having parallel edges adapted to receive a hexagonal nut therebetween, a member pivoted to each of said jaws, each member having three edges for contacting three edges of said nut, said pivoted members being movable by said nut into engagement with the sides of said nut upon sliding the wrench radially onto said nut, and means for locking said members against pivotal movement in nut engaging position to prevent radial movement of the wrench ofif said nut, said means comprising a member slidably mounted on said wrench and adapted to be moved between said pivoted members.

3. A wrench comprising a pair of aligned and spaced similar sections, each section having a pair of spaced fingers having parallel edges for receiving a hexagonal nut therebetween, the fingers on said sections forming slots, a third section interposed between and contacting said sections and fixed thereto, members received within said slots and pivoted to said fingers, each member having portions for engaging three sides of said hexagonal nut and being movable by said nut into nut engaging position upon moving the wrench radially onto said nut, and means for locking said pivoted members against pivotal movement to prevent radial movement of the wrench ofi said nut.

4. A wrench comprising a pair of aligned and spaced similar sections, each section having a ''pair of spaced fingers having parallel edges for receiving a hexagonal nut therebetween, the fingers on said sections forming slots, a third section interposed between and contacting said sections and fixed thereto, members received Within said slots and pivoted to said fingers, each member having portions for engaging three sides of said hexagonal nut and being movable by said nut into nut engaging position upon moving the wrench radially onto said nut, and means for locking said pivoted members against pivotal movement to prevent radial movement of the wrench off said nut, said means comprising a member slidably mounted between said pair of spaced sections and having a portion adapted to be moved between said pivoted members.

ALDO COLOGNORI.

LOUIS WERKSTELL. 

